Interface to a telephone set



FIG. 1 is a perspective view of an interface to a telephone set showing our new design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a right side elevational view;

FIG. 5 is a left side elevational view;

FIG. 6 is a rear elevational view; and,

FIG. 7 is a front elevational view thereof. 

The ornamental design for an interface to a telephone set, as shown and described. 